WILTON, Conn. - Hurricane Sandy already has affected the Wilton Public Schools’ 2012-13 calendar and more changes probably will be made.

Wilton Schools Superintendent Gary Richards said the current academic year will now conclude June 21, a week later than it was originally slated to end.

Wilton Schools have been closed all week in response to the major storm that hit the area this week and has left thousands of residents without power.

A decision on opening schools Monday will come after assessing the town’s power situation and the safety of town roads.

Richards said the Wilton Board of Education probably will have to make more changes since it is likely Wilton will have a normal winter, not the mild season the town experienced last year where schools stayed open after late October.

That could include taking time away from originally scheduled vacations, he said.

“So I anticipate we will have some snow, in which case, we may need to adjust the vacation time,” Richards said Thursday. “We need to think about if we have more inclement weather. I think we’ll have to figure out a plan.”

The Wilton school board will have a special meeting at 7 p.m. Monday at the Wilton High School library.

All of Wilton’s schools have power and none sustained significant damage, Richards said.